Optimizing Student Extracurricular Classification: RapidMiner Based K-Means Clustering Study at Darunnajah High School. JOISTECH [Internet]. 2024 Jun. 30 [cited 2026 Jul. 25];1(1):25-31. Available from: https://ejournal.darunnajah.ac.id/index.php/joistech/article/view/251